| 摘要 |
The invention relates to manufacturing of fully dense strips, plates, sheets, and foils from titanium alloys, titanium metal matrix composites, titanium aluminides, and flat multilayer composites of said materials by direct powder rolling of blended powders followed by sintering. The resulting titanium alloy flat products have properties that meet or exceed the conventional ingot metallurgy alloys and are suitable for aerospace, automotive, sporting goods, and other applications. The process includes: (a) providing C.P. titanium matrix powder and at least one powder of alloying components, (b) mechanical activation by attrition of all alloying components, (c) blending titanium powder with attrited alloying powders obtained in step (b), (d) cold direct powder rolling in a mill with horizontally-positioned rolls with different diameters to achieve density of the rolled strip of 60±20% of the theoretical value with subsequent densification by re-rolling green strip, (e) densification by cold re-rolling of the green strip, (f) multiple cold re-rolling, and (g) sintering.
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